CN103170216A - Alcohol amine type ion liquor-containing compound absorbent capable of capturing carbon dioxide - Google Patents
Alcohol amine type ion liquor-containing compound absorbent capable of capturing carbon dioxide Download PDFInfo
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- CN103170216A CN103170216A CN2013100801113A CN201310080111A CN103170216A CN 103170216 A CN103170216 A CN 103170216A CN 2013100801113 A CN2013100801113 A CN 2013100801113A CN 201310080111 A CN201310080111 A CN 201310080111A CN 103170216 A CN103170216 A CN 103170216A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
- Y02C20/00—Capture or disposal of greenhouse gases
- Y02C20/40—Capture or disposal of greenhouse gases of CO2
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Abstract
The invention discloses an alcohol amine type ion liquor-containing compound absorbent capable of capturing carbon dioxide. The alcohol amine type ion liquor-containing compound absorbent is characterized by comprising an absorption component, a corrosion inhibitor, an antioxidant and solvent, wherein the absorption component consists of N-Methyldiethanolamine and ionic liquid (TETAH)<+>(BF4)<->. The invention provides a compound absorbent which is high-efficiency, good in stability, easy to desorb, and low in regeneration energy consumption and can capture carbon dioxide. Organic amine and ionic liquid are mixed, the organic alcamines has the characteristics of being high in absorption rate and large in absorption capacity and the ionic liquid has the properties of low steam pressure and good stability and the like, thus supplementing each other so as to improve the processing capacity of carbon dioxide.
Description
Technical field
The invention belongs to gas separation technique field, relate to a kind of method that gas separates, particularly the method that contains hydramine type ionic liquid composite absorber of capturing carbon dioxide gas from mist.
Background technology
The greenhouse effects that CO2 emission causes cause serious climatic effect to our earth.The world's majority state that comprises at present China has all been signed Kyoto Protocol, and the discharge capacity of controlling carbon dioxide is described, has become very problems of concern of countries in the world.Carbon dioxide as a kind of carbon resource of preciousness, is widely used in the multiple fields such as chemical industry, food, medicine, if effectively with its exploitation, just can provide carbon resource for us continuously simultaneously.The source of China's carbon dioxide is very abundant, but because the measure of reclaiming carbon dioxide is unfavorable, the carbon dioxide of annual recycling also not enough total release 1%, therefore, the emission problem that effectively solves carbon dioxide is extremely urgent.
The method of collecting carbonic anhydride mainly contains: solvent absorption, physisorphtion, membrane separation process, O
2Production by Catalytic Combustion Process etc.Wherein chemical solvent method absorbing carbon dioxide technology is widely used in the discharging sources of the gas such as natural gas, refinery gas, synthesis gas, flue gas.At present, hydramine is chemical solvent method absorbing carbon dioxide absorbent commonly used in industrial production.The method with the aqueous solution of hydramine such as monoethanolamine (MEA), diethanol amine (DEA), diisopropanolamine (DIPA) (DIPA), N methyldiethanol amine (MDEA) etc. as absorbent.For the absorbability that further improves absorbent, reduce corrosivity, the energy consumption when reducing the loss that causes because of volatilization and regeneration, people are devoted to develop efficient chemical solution absorbent always, through years of researches, the absorbent of one pack system high energy consumption from beginning develops into the absorbent of present compounding ingredients low energy consumption, and the process energy consumption is high, equipment corrosion serious, the absorbent rate of deterioration is fast, high volatility causes the problems such as absorbent loss but still exist at present.Therefore, exploitation absorbent efficient, eco-friendly capturing carbon dioxide is present problem demanding prompt solution.
Ionic liquid is near the salt that is made of zwitterion and be in a liquid state normal temperature, is a kind of emerging solvent, reaction medium and catalyst.That ionic liquid has is non-volatile, ionic structure can design, liquid state exists that temperature range is wide, good stability, advantages of environment protection, has broad application prospects at aspects such as extract and separate, catalytic reaction, GAS ABSORPTION.Ionic liquid can make up the volatile shortcoming of traditional hydramine absorbent as the absorbent of sour gas, and can not pollute needs Purge gas and environment, can not cause because of volatilization the loss of absorbent.Viscosity is large, building-up process is complicated, cost is high, infiltration rate is slow but general ionic liquid has, and the problem such as absorptive capacity is low, absorption and regenerability are difficult to optimize has simultaneously limited the application of ionic liquid in the collecting carbonic anhydride field greatly.Chinese patent CN102179132A application in 2011 discloses a kind of absorbent for capture or separating carbon dioxide, its absorbent is the aqueous solution of monoethanolamine and 1-butyl-3-methylimidazole tetrafluoro boric acid sodium salt, in described absorbent, the concentration of monoethanolamine is 100g/L-300g/L, and the mass ratio of monoethanolamine and 1-butyl-3-methylimidazole tetrafluoro boric acid sodium salt is 0.5-3.Chinese patent CN102527192A application in 2011 discloses a kind of carbon-dioxide absorbent that contains ionic liquid, the content of this absorbent intermediate ion liquid is 5-50wt%, hydramine 5-50wt%, the content of water is 0-90wt%, anion is the anion with amino acid structure, cation is organic amine salt cation, organic alcohol amine cationoid, and hydramine is monoethanolamine, diethanol amine, triethanolamine, N methyldiethanol amine, 2-amino-2-methyl-1-propanol.But the general synthesis technique of imidazole type ion liquid is complicated, and the uptake of unit mass is lower, and simple ionic liquid is after absorbing carbon dioxide, and the viscosity of ionic liquid extremely rises, and has limited the application of ionic liquid at coal-burning power plant's carbon dioxide removal.The amino-type ionic liquid refers to organic polyamine is mixed with inorganic acid or organic acid the ionic liquid that makes by the acid-base reaction neutralization reaction, has that cost is low, the simple advantage of preparation method.
As seen, how develop the New Absorbent of environmental friendliness, economical and efficient by rational approach, become one of focus of following collecting carbonic anhydride technique research and development.
Summary of the invention
To be solved by this invention is the technical problem that existing carbon dioxide absorber adsorption process energy consumption is high, equipment corrosion serious, the absorbent rate of deterioration fast, high volatility causes the absorbent loss.
In order to address the above problem, the invention provides a kind of composite absorber that contains hydramine type ionic liquid catching carbon dioxide, it is characterized in that, comprise N methyldiethanol amine (MDEA) and ionic liquid [TETAH]
+[BF
4]
-The absorption component, corrosion inhibiter, antioxidant and the solvent that form.
Preferably, described corrosion inhibiter is sodium vanadate, vanadic anhydride or both mixtures.
Preferably, described antioxidant is the mixture of sodium sulphite and Schweinfurt green arbitrary proportion.
Preferably, described solvent is water.
Preferably, described ionic liquid is mixed the neutral solution that makes by the acid-base neutralization reaction with inorganic acid by organic polyamine.
Preferably, the mass content of described absorbent components in adsorbent is 30%-70%, and wherein, the mass ratio of N methyldiethanol amine and ionic liquid is 1～10: 1.
Preferably, the mass content of described corrosion inhibiter in adsorbent is 0.05%-1.0%.
Preferably, the mass content of described antioxidant in adsorbent is 0.05%-1.0%.
Preferably, in described adsorbent, the mass content of amine is 30%-50%.
Preferably, the mass content of described solvent in adsorbent is between 0%-70%.
The invention provides a kind of efficient, have good stability and the composite absorber of easily desorb, capturing carbon dioxide that the regeneration energy consumption is low.The present invention mixes organic amine with ionic liquid, the character such as the characteristics high in conjunction with organic alcamines absorption rate, that absorptive capacity is large and ionic liquid low-steam pressure, good stability complement each other, to improve the disposal ability of carbon dioxide.
Compared with prior art, the composite absorber absorption and desorption carbon dioxide of hydramine type ionic liquid catching carbon dioxide provided by the invention has the following advantages:
(1) ionic liquid used in the present invention is a kind of amino-contained ionic liquid of cheapness, compares with imidazoles, pyridine, guanidine class ionic liquid in existing technology, and the synthesis material of this ionic liquid is cheap and easy to get, and cost of material is low; Ionic liquid is by the neutralization reaction preparation of one step of soda acid, and synthesis process is simple; Preparation process is simple; The preparation process no coupling product belongs to atomic economy reaction, and the preparation process greenization is fit to large-scale production;
(2) ionic liquid used in the present invention itself can absorbing carbon dioxide gas, can greatly improve composite absorber to the absorptive capacity of carbon dioxide;
(3) the present invention can increase the stability of composite absorber mixed system to the use of ionic liquid, improves anti-shock loading and the heat-resisting ability of absorbent, reduces the loss of absorbent;
(4) hydramine used in the present invention and the ionic liquid interaction absorbent vapour pressure risk that do not exist higher boiling to cause;
(5) the adaptable wider range of composite absorber of the present invention, can satisfy different temperature requirements;
(6) composite absorber desorption temperature of the present invention is low, and 60-80 ℃ of beginning desorb, but general absorbent needs just desorb more than 85 ℃, can greatly reduce the regeneration energy consumption;
(7) it is fast that composite absorber of the present invention is resolved speed, 45min desorb fully, and general absorbent needs the complete desorb of 90min;
(8) composite absorber of the present invention is insensitive to the reaction of absorption gas flow rate, can satisfy different traffic requirements;
(9) composite absorber of the present invention can recycle, by repeatedly still keeping original assimilation effect after circulation;
(10) composite absorber of the present invention has been broken through the defective separately of organic amine and ionic liquid, learn from other's strong points to offset one's weaknesses, improve the absorbent of unit mass to the uptake of carbon dioxide, use and the internal circulating load of absorbent have been reduced, thereby can reduce the energy consumption of whole technical process, reduce the collecting carbonic anhydride cost;
(11) composite absorber of the present invention is suitable for the carbon dioxide in the multiple chemical reaction tail gas of high efficiente callback, combustion flue gas and natural mist, also can be used for removing the carbon dioxide in town gas, natural gas etc.
The specific embodiment
For the present invention is become apparent, hereby with preferred embodiment, be described in detail below.
Embodiment 1: the preparation ionic liquid
Embodiment 1: the preparation ionic liquid
1) device: there-necked flask; Paddle, dropping funel and condensing reflux pipe are housed on there-necked flask.
2) raw material: triethylene tetramine (TETA); Tetrafluoro boric acid (HBF
4); Water.
3) preparation method: there-necked flask is placed in ice-water bath; Take triethylene tetramine (TETA), it is 60wt% that water is diluted to mass concentration with it, pours in there-necked flask and stirs; Take and the equimolar tetrafluoro boric acid (HBF of triethylene tetramine (TETA)
4), it is 60wt% that water is diluted to mass concentration with it, pours in dropping funel, splashes into slowly in there-necked flask; Dropwising rear continuation stirred in ice-water bath 3 hours; After reacted liquid evaporation being removed 95% moisture, at 60 ℃ of dry 24h, obtain [TETAH] with vacuum drying chamber
+[BF
4]
-Ionic liquid.
Embodiment 2: the configuration composite absorber
1) raw material: MDEA; [TETAH]
+[BF
4]
-Ionic liquid (adopting the method for embodiment 1 to make); Corrosion inhibiter: sodium vanadate; Antioxidant: weight ratio is the sodium sulphite of 1: 1 and the mixture of Schweinfurt green; Deionized water.
2) preparation method: with 300gMDEA and 100g[TETAH]
+[BF
4]
-Ionic liquid is dissolved in deionized water, adds 8g corrosion inhibiter, 8g antioxidant, is settled to 1L with deionized water, stirs, and obtains composite absorber.The gained absorbent is placed in 30 ℃ of Water Tanks with Temp.-controlled is incubated 10min, make the absorbent temperature reach 30 ℃ of design temperatures, stir, stand-by.
Embodiment 3: the configuration composite absorber
1) raw material: MDEA; [TETAH]
+[BF
4]
-Ionic liquid (adopting the method for embodiment 1 to make); Corrosion inhibiter: sodium vanadate; Antioxidant: weight ratio is the sodium sulphite of 1: 1 and the mixture of Schweinfurt green; Deionized water.
2) preparation method: with 200gMDEA and 200g[TETAH]
+[BF
4]
-Ionic liquid is dissolved in deionized water, adds 8g corrosion inhibiter, 8g antioxidant, is settled to 1L with deionized water, stirs, and agent is absorbed.The gained absorbent is placed in 30 ℃ of Water Tanks with Temp.-controlled is incubated 10min, make the absorbent temperature reach 30 ℃ of design temperatures, stir, stand-by.
Embodiment 4: the configuration composite absorber
1) raw material: MDEA; [TETAH]
+[BF
4]
-Ionic liquid (adopting the method for embodiment 1 to make); Corrosion inhibiter: sodium vanadate; Antioxidant: weight ratio is the sodium sulphite of 1: 1 and the mixture of Schweinfurt green; Deionized water.
2) preparation method: with 100gMDEA and 300g[TETAH]
+[BF
4]
-Ionic liquid is dissolved in deionized water, adds 8g corrosion inhibiter, 8g antioxidant, is settled to 1L with deionized water, stirs, and agent is absorbed.The gained absorbent is placed in 30 ℃ of Water Tanks with Temp.-controlled is incubated 10min, make the absorbent temperature reach 30 ℃ of design temperatures, stir, stand-by.
Embodiment 5: the configuration composite absorber
1) raw material: MDEA; [TETAH]
+[BF
4]
-Ionic liquid (adopting the method for embodiment 1 to make); Corrosion inhibiter: sodium vanadate; Antioxidant: weight ratio is the sodium sulphite of 1: 1 and the mixture of Schweinfurt green; Deionized water.
2) preparation method: with 400gMDEA and 40g[TETAH]
+[BF
4]
-Ionic liquid is dissolved in deionized water, adds 8g corrosion inhibiter, 8g antioxidant, is settled to 1L with deionized water, stirs, and agent is absorbed.The gained absorbent is placed in 30 ℃ of Water Tanks with Temp.-controlled is incubated 10min, make the absorbent temperature reach 30 ℃ of design temperatures, stir, stand-by.
Embodiment 6: the configuration composite absorber
1) raw material: MDEA; [TETAH]
+[BF
4]
-Ionic liquid (adopting the method for embodiment 1 to make); Corrosion inhibiter: sodium vanadate; Antioxidant: weight ratio is the sodium sulphite of 1: 1 and the mixture of Schweinfurt green; Deionized water.
2) preparation method: with 150gMDEA and 150g[TETAH]
+[BF
4]
-Ionic liquid is dissolved in deionized water, adds 8g corrosion inhibiter, 8g antioxidant, is settled to 1L with deionized water, stirs, and agent is absorbed.The gained absorbent is placed in 30 ℃ of Water Tanks with Temp.-controlled is incubated 10min, make the absorbent temperature reach 30 ℃ of design temperatures, stir, stand-by.
Embodiment 7: the configuration composite absorber
1) raw material: MDEA; [TETAH]
+[BF
4]
-Ionic liquid (adopting the method for embodiment 1 to make); Corrosion inhibiter: sodium vanadate; Antioxidant: weight ratio is the sodium sulphite of 1: 1 and the mixture of Schweinfurt green; Deionized water.
2) preparation method: with 250gMDEA and 250g[TETAH]
+[BF
4]
-Ionic liquid is dissolved in deionized water, adds 8g corrosion inhibiter, 8g antioxidant, is settled to 1L with deionized water, stirs, and agent is absorbed.The gained absorbent is placed in 30 ℃ of Water Tanks with Temp.-controlled is incubated 10min, make the absorbent temperature reach 30 ℃ of design temperatures, stir, stand-by.
Get respectively the adsorbent 200g (in the adsorbent that embodiment 2-5 makes, the gross mass content of amine is above-mentioned three kinds of composite absorbers of 40%) that embodiment 2-5 makes, pack in the reactor of being furnished with the constant temperature oil bath agitator of 500ml, be under 40 ℃ of conditions in temperature, with the 4ml/s flow velocity, passing into pressure is that 0.2MPa, concentration are 99% CO
2And beginning timing, (MF4003, Tianjin brilliance Kate flowmeter Co., Ltd) carries out METHOD FOR CONTINUOUS DETERMINATION with the smart electronics flowmeter, stops immediately test when the import and export gas flow is identical, calculate thus the absorption rate of carbon dioxide, uptake and absorption load, after solution reached capacity, oil bath temperature was set to 100 ℃ and carries out desorb, and measure its complete desorption quantity and desorption rate, test result is as shown in table 2-3.Calculate the absorption efficiency of each adsorbent, computational methods are as follows:
Absorption efficiency η=(1-Q
Go out/ Q
Advance) * 100%;
Q wherein
AdvanceBe import CO
2The flow of gas (being recorded by the smart electronics flowmeter), Q
Go outBe outlet CO
2The flow of gas, result of the test is as shown in table 1.
The assimilation effect table of the absorbent of table 1 ionic liquid different proportion
Table 2 carbon dioxide absorption effect expedition table
Table 3 carbon dioxide desorption effect investigation table
Getting respectively adsorbent 200g that embodiment 4,6,7 makes and pack in the reactor of being furnished with the constant temperature oil bath agitator of 500ml, is under 40 ℃ of conditions in temperature, and with the 4ml/s flow velocity, passing into pressure is that 0.2MPa, concentration are 99% CO
2With smart electronics flowmeter (MF4003, Tianjin brilliance Kate flowmeter Co., Ltd) carry out METHOD FOR CONTINUOUS DETERMINATION, calculate thus the absorption rate of carbon dioxide, uptake and absorption load, after solution reached capacity, oil bath temperature was set to 100 ℃ and carries out desorb, and measure its complete desorption quantity and desorption rate, test result is as shown in table 4-5.
Table 4 carbon dioxide absorption effect expedition table
Table 5 carbon dioxide desorption effect investigation table
By as seen from Table 1, when the mass ratio of MDEA and ionic liquid is 1: 1st, the absorbent effect of composite absorber is better, if the amount of absorbent intermediate ion liquid is less, can't highlight the advantage of ionic liquid, if the concentration of ionic liquid is too high, increase use cost on the one hand, on the other hand because its viscosity is larger, affect the mobility of the absorbent of absorption process, thereby its absorption efficiency is affected.By table 2-3 as seen, along with the increase uptake in reaction time constantly increases, under the identical time, the uptake of embodiment 3 is larger, and the ratio of two components in visible embodiment 3 is suitable.Saturated carbon dioxide absorbent solution is 80 ℃ of beginning desorbs, and along with the speed of the increase desorb of time reduces gradually, the desorption efficiency of embodiment 3 is the highest, this shows that embodiment 3 can reach effect preferably, and experiment after this is all take embodiment 3 as absorbent.Embodiment 2-4 is close with desorption quantity through three its uptakes of desorb, and it is as shown in table 3 more than 90% that desorption efficiency all reaches, and stability better is suitable for industrial applications.By table 4 and as seen from Table 5, the increase according to the total amount of amine increases composite absorbent to the carbon dioxide absorption amount, when the content of amine greater than 40% uptake increase not obvious.
General collecting carbonic anhydride technology is used for the flue gas of power plant, cigarette factory etc., and the one-tenth grading factors of the flow of flue gas, temperature, gas all has certain impact to the absorbability of absorbent.Enumerate 2 important factors in the invention specific embodiment, the flow of flue gas and temperature are come the stability of test compound absorbent:
Embodiment 7: the impact of gas flow rate on compound adsorbent
With 200g wherein the gross mass content of amine be the composite absorber that 40% embodiment 3 makes, pack in the reactor of being furnished with the constant temperature oil bath agitator of 500ml, be under 40 ℃ of conditions in temperature, with the flow velocity of 4ml/s, 10ml/s, 20ml/s, continuing to pass into pressure is that 0.2MPa, concentration are 99% CO
2, carry out METHOD FOR CONTINUOUS DETERMINATION with smart electronics flowmeter (MF4003, Tianjin brilliance Kate flowmeter Co., Ltd), when the import and export gas flow equates, absorb the saturated experiment that stops, test data is as shown in table 6.
Table 6 gas flow rate affects investigation table to assimilation effect
Embodiment 8: the impact of temperature on compound adsorbent
With 200g wherein the gross mass content of amine be 40% embodiment 3 composite absorbers, pack in the reactor of being furnished with the constant temperature oil bath agitator of 500ml, the temperature of setting respectively oil bath is 30,40,50,60 ℃, and with the flow velocity of 4ml/s, passing into pressure is that 0.2MPa, concentration are 99% CO
2, carry out METHOD FOR CONTINUOUS DETERMINATION with the smart electronics flowmeter, when the import and export gas flow equates, absorb the saturated experiment that stops, test data is as shown in table 7.
Because absorption reaction belongs to exothermic reaction, temperature not only affects the Direction of Reaction but also affects reaction rate, so the impact of temperature is the process of relative complex.By as seen from Table 6, gas flow is less on the absorption efficiency impact of composite absorber, and this illustrates that this absorbent has stability and anti-load-bearing capacity preferably.By as seen from Table 7, composite absorber is along with the rising of temperature, and absorption rate, absorptive capacity all increase to some extent.
The affect investigation table of table 7 temperature on absorption efficiency
In sum, composite absorber regeneration temperature provided by the invention is hanged down 80 ℃ of beginning desorbs, and parsing speed is fast, 45min desorb fully, and general absorbent needs the complete desorb of 90min.Composite solution of the present invention can be used for catching or separating various mists, comprises the carbon dioxide in flue gas, multiple chemical reaction tail gas, also can be used for the carbon dioxide in purifying city coal gas, natural gas, synthesis gas, conversion gas and hydrogen.The composite absorber of carbon dioxide of the present invention has good absorption and desorption effect, the temperature of desorb is lower, greatly reduce the regeneration energy consumption, the power of regeneration of absorbent is strong, the use of ionic liquid makes the loss of absorbent greatly reduce, reduced the cost of use cost and post-processed, the stability of composite absorber and anti-load are strong, can be used for industrial production.
Claims (10)
1. a composite absorber that contains hydramine type ionic liquid catching carbon dioxide, is characterized in that, comprises N methyldiethanol amine and ionic liquid [TETAH]
+[BF
4]
-The absorption component, corrosion inhibiter, antioxidant and the solvent that form.
2. the composite absorber that contains hydramine type ionic liquid catching carbon dioxide according to claim 1, is characterized in that, described corrosion inhibiter is sodium vanadate, vanadic anhydride or both mixtures.
3. the composite absorber that contains hydramine type ionic liquid catching carbon dioxide according to claim 1, is characterized in that, described antioxidant is the mixture of sodium sulphite and Schweinfurt green arbitrary proportion.
4. the composite absorber that contains hydramine type ionic liquid catching carbon dioxide according to claim 1, is characterized in that, described solvent is water.
5. the composite absorber that contains hydramine type ionic liquid catching carbon dioxide according to claim 1, is characterized in that, described ionic liquid is mixed the neutral solution that makes by the acid-base neutralization reaction with inorganic acid by organic polyamine.
6. the composite absorber that contains hydramine type ionic liquid catching carbon dioxide according to claim 1, it is characterized in that, the mass content of described absorbent components in adsorbent is 30%-70%, and wherein, the mass ratio of N methyldiethanol amine and ionic liquid is 1～10: 1.
7. the composite absorber that contains hydramine type ionic liquid catching carbon dioxide according to claim 1 and 2,
It is characterized in that, the mass content of described corrosion inhibiter in adsorbent is 0.05%-1.0%.
8. according to claim 1 or 3 described composite absorbers that contain hydramine type ionic liquid catching carbon dioxide,
It is characterized in that, the mass content of described antioxidant in adsorbent is 0.05%-1.0%.
9. the composite absorber that contains hydramine type ionic liquid catching carbon dioxide according to claim 1, is characterized in that, in described adsorbent, the mass content of amine is 30%-50%.
10. the according to claim 1 or 4 described composite absorbers that contain hydramine type ionic liquid catching carbon dioxide, is characterized in that, the mass content of described solvent in adsorbent is between 0%-70%.
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| CN113731489A (en) * | 2021-09-10 | 2021-12-03 | 湖南大学 | Ionic liquid catalyst for regeneration of carbon dioxide-rich amine solution |
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| CN109201007B (en) * | 2018-09-27 | 2021-02-09 | 太原理工大学 | Carbon dioxide adsorbent and preparation method and application thereof |
| CN113731489A (en) * | 2021-09-10 | 2021-12-03 | 湖南大学 | Ionic liquid catalyst for regeneration of carbon dioxide-rich amine solution |
| CN113842749A (en) * | 2021-09-26 | 2021-12-28 | 武汉工程大学 | Alcohol amine and ionic liquid composite CO2Absorbent, preparation method and application thereof |
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